O's Roberts suffering balance loss, headaches

Kids, learn from the pros -- hitting yourself in the head with a baseball bat is a bad thing. Even if you are wearing a helmet.

Orioles second baseman Brian Robinson missed the last six games of the season with concussion-like symptoms.

"I don't know 100 percent sure [what caused the concussion], but it was Monday night. In frustration, I whacked myself on the head with my bat in the ninth. I had my helmet on," Roberts told Brittany Ghiroli of MLB.com . "It's something I've done a million times, but I can't tell you for sure if that was it. But that's the only thing that I can point to because that night and the next morning, I just didn't feel good."

Roberts said he's had a "lack of balance" and headaches since Monday.

-- C. Trent Rosecrans

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